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(No Model.) 2 Sheets-Sheet 1. J. BAKER.

.OIL FILTER. No. 328,872. Patented Oct. 20, 1885.

(No Model.) 2 Sheets-Sheet 2.

J. BAKER.

OIL FILTER. N0. 328,872. Patented Oct. 20, 1885.

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'Urrrrnn grates ATENT @rrrcra JOHN BAKER, OF SALT LAKE CITY, UTAHTERRITORY.

OlLwFlLTER.

SPECIFICATION forming part of Letters Patent No. 328,872 dated October20, 1885.

Application filed February 5, 1885. Serial No. 155,161. (No model.)

T0 at whom it may concern.-

Be it known that 1, JOHN, BAKER, a citizen of Great Britain, residing atSalt Lake City, in the county of Salt Lake and Territory of Utah, haveinvented certain new and useful Improvements in Oil-Filters, of whichthe following is a specification, reference being had to theaccompanying drawings.

My invention relates toloil-filters; and it consists in the peculiarconstruction and ar rangement of the several parts of the device, whichwill be more fully hereinafter described, and definitely pointed out inthe claims.

The object of my invention is to provide a device for the filtration andconsequent purification of oils which have been used for lubricants orother purposes, whereby they are rendered free from grit and dirt andadapted to be again used, the operation being repeated upon the same oilas often as it is necessary to cleanse it, thus saving a great expensein the use of oil which has heretofore been wasted by being thrown awayor destroyed. I attain this object by the device illustrated in theaccompanying drawings, wherein like letters of reference indicatesimilar parts in the several views, and in which Figure 1 is a sideelevation of my improved oil-filter. Fig. 2 is a vertical longitudinalsection of the same.

This device consists, essentially, of the compartments or chambers A, B,and 0, made of tin or other suitable light metal. The top compartment orfirst filter, A, is provided with a lid or cover, A, which fits into thetop of said compartment by a suitable flange or rim. The bottom of thiscompartment has a flange or rim, a, which fits into and engages with theupper part of compartment B,which compartment in like manner has asimilar flange, b, which engages with the upper part of thelowermostcompartment or reservoir, 0. The compartments A and B have bottoms a andb, situated a short distance above the lowest part of the flanges orrims a and I), and in these bottoms to and b are inserted verticallyshort tubes to and 5. These vertical tubes a and b are so situated inthe bottoms a and b that their uppermost portions extend farther abovethe upper surface of said bottoms than their lower portions do below thelower surfaces thereof.

In the tubes a and b are placed lengths of woolen yarn or cords c, whichextend a short distance .below the extremities of said tubes, and at theupper parts of said tubes they are madeto .fall over, being of somelength at this point, for the purpose of forming siphons. The long ends,massing together, cover all the space of the upper surface of thebottoms a and b, and by capillary attraction the oil is drawn up throughthe woolen yarn or cords and allowed to percolate through the tubes aand 11 into the adjacent compartment. The lower compartment, 0, forms areservoir or depositing receptacle for the oil which passes through thefiltering chambers or compartments A and B. This compartment 0 isprovided with a bottom, 0, and also in its lower portion with adrain-cock, D, which is used to convey the purified oil from thereceptacle C. On the sides of the compartments A, B, and O are attachedlifting links or handles d, which aid in separating the compartmentswhenit becomes necessary to clean them or to replenish the tubes a and bwith the woolen yard or cords 0.

The operation of myimproved oil-filter is as follows: The lid A of theupper compartment, A, is removed, and the oil which has pre viously beencollected from drip-cups or like receptacles on machinery is put intothe filter A.

By the arrangement of the woolen yarn or cords cheretofore described theoil is drawn up and passed down off of the lower ends of the yarn intothenext compartment, B, from whence it is again passed through thefiltering process and drips into the reservoir or receivingreceptacle 0,and from this compartment the purified oil is drawn off by means of thedraincock D, and is ready for use. After the oil has all drained out ofthe filterAit is removed by means of the handles cl, and the dirt orgrit is removed from its bottom and it is reset in position and againready to receive a new charge of unclean oil to be purified.

The advantage gained by having the two filtering-compartments A and B isthat the oil in passing through the filter A is cleaned of dirt andgrit,and by its second passage through filter B is purified and bleachedtoacolor substantially the same as when first used.

When it is desired to cleanse the oil more perfectly, as manyfiltering-chambers may be used as are deemed necessary, being arrangedin the same manner as those heretofore described.

It is obvious that this filter could be used for filtering other liquidsas well as oils, and that many minor mechanical changes in constructioncould be substituted for those shown without in the least departing fromthe nature and principle of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A filter consisting of the combination of a filtering-vessel providedwith a series of wick tubes projecting into it upward and through itsbottom, a series of "wicks in said tubes, their upper ends hanging overthe tops of the tubes and their lower ends extending down within thetubes sufficiently far to cause the wicks to act as capillary siphons,and a receiving vessel for the filtered liquid arranged beneath thebottom of the said vessel and receiving the drip from said wicks, substantially' as and for the purposes set forth.

2. The combination, to form a capillary filter, of two or morefiltering-vessels constructed to fit one above another, and eachprovided with wick-tubes inclosed within it extending upward from itsbottom, with a closed receiving-vessel for the filtered liquid arrangedbeneath and fitting the lowermost filtering-vessel, substantially as setforth, whereby the liquid in the upper vessel is subjected to suecessivecapillary filtrations and the wicks are concealed and protected.

In testimony whereof I aEfiX my signature in presence of two witnesses.

JOHN BAKER.

Witnesses:

J'No. G. BEoHroL, E. B. WILDER.

